A Q-switched S-band fiber laser based on a thulium-fluoride fiber gain medium and copper telluride (Cu 2 Te) based saturable absorber (SA) is demonstrated. The Cu 2 Te based SA is fabricated as a thin film and at the maximum pump power, the generated Q-switched output has a minimum pulse width of 3.2 µ s and highest pulse energy of 56.7 nJ. The pulse train varies from 20.9 kHz to 30.2 kHz at the highest pump power. The wavelength of the generated output can be tuned over a range of 32 nm from 1470 nm to 1502 nm. The demonstrated laser has a high potential for industrial applications focusing on the S-band region.

中文翻译：

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具有碲化铜可饱和吸收剂的无源调Q开关S + / S带光纤激光器

对基于氟化ul光纤增益介质和碲化铜（Cu 2 Te）基可饱和吸收体（SA）的Q开关S波段光纤激光器进行了说明。基于Cu 2 Te的SA被制成薄膜，并且在最大泵浦功率下，所产生的Q开关输出的最小脉冲宽度为3.2 µs，最大脉冲能量为56.7 nJ。在最高泵浦功率下，脉冲序列在20.9 kHz至30.2 kHz之间变化。可以在从1470 nm到1502 nm的32 nm范围内调整生成的输出的波长。所展示的激光器在聚焦于S波段区域的工业应用中具有很高的潜力。